MIL disappoints my DD

Ok so, long story short, my MIL has a habit of telling my DD of 3 that she will come pick her up and they will go to eat, pick up her cousin and play, and so on. She has done this several times in the last couple weeks and hasn’t showed or called. Then when we finally talk to her she acts like nothing happened. Yesterday, my DD asked if gramma could pick her up and they could hang out. So naturally I texted my mil due to her flakiness and she said she’d be avail later in the day. Late pm. My DD was up early so I asked her to text or call before she came by to see if she was still awake(she’s fallen asleep before when there have been events scheduled with my MIL and my MIL tells me, just wake her) ???? She said ok, we should hear from her around 4. She said we could drop off both girls my baby that’s 9 months and DH and I could go eat. 430,530,630 roll around..... we never hear from her. My DD asking all evening where’s gramma. Now today she keeps mentioning gramma saying, I miss her. Where’s gramma. I don’t know what to tell her but, I know baby, I’m sorry. You’ll see her soon. She’ll call when she’s not busy. My thing is this, my DD is 3. I don’t need anyone teaching her disappointment or how to be flaky. I’ve always been a firm believer in, if your not sure or have any doubt at all about being able to do something, please say it’s not a good time. I’ll understand and at least I can explain that to my DD instead of seeing her disappointed.She’s done this kind of thing once before that comes to mind, she’s told us she’s bringing her other gram daughter over to play then she texted me maybe not, then 30 min later, maybe , then she shows up and hour later with her to play.Not only do I see her disappointing my DD but I think it’s also a lack of respect for us as a family and what we may want to plan for our day or just be available for. I guess what I’m asking is, am I over reacting, should I be more patient, I want to talk to her about this flakiness with my daughter cause I hate seeing her so upset and I don’t want her to have these memories of gramma, oh gramma? She never comes through. I think grammas should be loved my DD should have good memories of her gramma. What do I do? via /r/Parenting https://ift.tt/2XGEupZ