15 month checkup and OT update

So Hailey is now officially 15 months! She had her checkup yesterday and right on time she developed a total body rash. It started Sunday and has progressively gotten worse though it doesn't seem to bother her. I worried all day yesterday thinking of all the things it could be and come to find out its a viral rash. The ped asked if she had been sick in the last few weeks and yes she has, so I guess once the immune system rids the body of a sickness it sometimes produces a rash for about a week. It is not contagious, just looks awful! Because of this lovely rash she was able to put off her shots for a week, she doesn't realize how lucky she was, but I surely felt lucky (ha, ha)!
On to her appt ... drumroll please ... she weighed in at 18lbs, 13oz and 28inches long. The ped was very happy with this and said even though she is not on the charts they do not expect her to be starting out at 2lbs and they are very happy with her growth being at a steady rate. She did really well on her height because at her 9mo appt she was about 26 1/2in and at her 12mo she was only 26 1/4in so I was starting to worry, but 28in is a great jump!
Other than the rash though she is doing great and the ped says she is right on track developmentally. She even said not to let the PT and OT therapies stress me out because Hailey is just perfect with no delays.
On to the OT update. The OT did say she thinks Hailey has some sensory sensitivities due to gravitational insecurities and also due to pulling at her clothes when she is mad or taking her bib off when we put it on. For those of you who know her daddy I wonder if some of this is just not her personality, but I guess I should go with the flow. What tips me off is one day she might be sensitive to something and the next day she loves it, such as swinging or riding in the car (gravitational insecurities). At times I think these therapies are more stress then they are worth. Lastly, Hailey doesn't seem to know when she is full. She will eat and eat till I stop her. I brought this up to both the OT and the ped, The OT wants her to see a nutritionist for this because she said Hailey could be using this as a soothing method. Also she is concerned about how small Hailey is. What does she want me to do, make her eat all kinds of bad foods to make her jump on the chart?! The ped says its a normal preemie thing, she has seen it where it is hard to get a preemie to eat and also where preemies eat and don't know when to stop. She said Hailey will grow out of it and I have noticed a slight improvement. SO now add to PT, OT and a nutritionist. When does the madness stop or do I just put it to a stop?!