Dog Advice Needed

[4 High]

My wife attempts to take her for a "long" walk at 6am but she never goes number two then no matter how long the walk is for. Also we walk her a lot more then 2x a day. She gets at the least 6-8 walks outside. When i say walks it includes playing outside, letting her run around, jumping around etc. Its not just a short walk and thats it.

When i wake up at 8am she calms down right away and usually lays down right next to me for a few hours. Then around 10 or so she basically gets up and tells me she has to go. Maybe i need to take her for the long walk at 6am? Maybe i just need to take her at 8 even if she doesnt "ask" me? But how would that prevent the two hour window?

Her crate is covered with towels and blankets so once shes in shes quiet, except for when we tried the 6am-8am thing.

Whats odd is, there are times when due to delays or whatever i don't get home until 8pm instead of 6 and the house is fine. I walk her right away, she goes no problem, but the house is untouched.