my pup gained her angel wings.

I know this may seem silly but our pup meant the world to us and I'd like to hear about other peoples experiences in having to put their pup down... and dealing with the grief.

Our story:

 My husband and I had to put our baby girl down on Monday unexpectedly. Morning of she was up and running, completely fine. At least that's what it seemed. Mid to late afternoon my husband face times me and says she didn't look well. I get home an hour later and when I saw her my heart shattered. she's completely limp, blood filled eye and not blinking at all, cold to the touch. We rush her to an emergency veterinary, they take her, we fill out paperwork. a vet assistant asked us what happened or what she could've gotten into. I was at work so my husband had to explain. Literally neither of us could figure out what happened, nothing was out of the ordinary and she got sick in the afternoon. So she leaves and then the vet comes in and says "okay, tell me what happened from this morning to now" and we told her she was fine I took her out in the morning and she was seemingly fine, she ate, nothing unordinary. My husband gave her a bath and she would drink water from the shower fall. Then she just started getting super lethargic and major decline after which we brought her in.. And so the vet says, you know what you need to tell me what really happened because things are not adding up and she's bleeding from her rectum and she's dying. Just like that. And so she goes on to say that bleeding like that only happens with trauma. At this point I'm crying uncontrollably and this woman is accusing us of beating our dog. Turns out she had hemangiosarcoma in the liver that burst. We spent some time with her before we had to make the decision to let her go finally. I held her in my arms until her last breath. That night just keeps replaying in my head. I can't help but feel guilty about certain things that could've been done differently, if treatment could've saved her... the house is so empty with out our baby.