Birthdays, birthdays all around

I was sitting here thinking about what to write about as I finished up the cupcakes for tomorrow's festivities. We are having the mother of birthday parties. My daughter, Karsyn was born on the same day as my first niece, Madison so when we come to NY for the summers we end up having a combined birthday party. Now this was great at first but now Maddi just turned 9 and Karsyn is only 3, that is a major difference in interest. This may be the last birthday we get to celebrate as one. I remember how excited we all were (Maddi included) to have a shared birth date. I guess we just weren't thinking this far ahead.

This is going to get a little off track so bare with me. I need to give you a little back story. My oldest daughter, Kaitlyn has her birthday in May and Karsyn has her birthday in July. When the kids were babies, The Daddy (my ex) and I discussed just having one party in the middle for friends and family since they are only one year apart and the actual days are only a few months apart AND over the summer. We tried this for the first time this year. We did a small celebration for each of them on their actual birthday with just me and The Daddy. We had the "party" for them some where in between. Now the issue is that MY family (in NY) really do not get to celebrate for Kaitlyn because we are never here around her birthday.

I am going to bring this rambling to a point now, I promise. This year we have decided to have a 3 in 1 party for Kaitlyn, Karsyn, and Madison. After we decided to do the party this way, I had second thoughts. I was feeling a bit guilty for a few reasons. 1) Maddi is usually stuck with what ever theme, I choose to do since I foot the bill. I try to make things as broad as possible and not to babyish for her. But still I am sure she would love to have a day that is just HER day.
2) I felt bad for Kaitlyn because I think she feels like she is just thrown into the lot and that the day really isn't about her at all.
Karsyn is the only one that really gets the special treatment on that day.

Like I stated before I don't think I will have a shared birthday party again for Maddi and Karsyn but do you think its ok to have one for my own two kids together since they are so close in age? *reminder* I am a single parent on a T-I-G-H-T budget. Thanks for reading.