What a blessing to be able to work from home. I do on Fridays and occasionally other days... the girls just love it when I'm home all day
1-2 hours is not long at all. You could definitely try it during those times then. Take her out right before you head out, then immediately take her out again as soon as you get back in. Hopefully, she'll pick it up in no time. Since she's not a pup, I'm not sure if older ones tend to be easier to train or not...I guess it depends on their past situations.
keep us posted.