How to get baby to drink water

My EBF baby doesn’t like water and she’s ALWAYS constipated.

I’ve posted about her how severe her constipation is before- nothing I’ve tried helps. I only feed her watery fruits and vegetables always with oil or butter on them and she still never poops on her own. I give her as much Senna as I can get in her, as much juice as I can.. nothing helps and she doesn’t like any of it so it’s a struggle every day

She loves food and yet I can’t feed her and I feel like I’m becoming depressed because I can’t help her and she’s probably not on the weight chart anymore. She’s afraid of diaper changes because she’s afraid I’m going to give her a suppository

She’ll drink from her sippy cup but just spits it out. She won’t eat prunes. Peaches don’t help. I give her as many ripe blackberries coated in oil as I can and she still WONT POOP. Ever. And when I get her to go it’s hard and horrible

Idk why I’m even posting because I’m sure I’ve tried everything