<human>: Can you provide a brief overview of the text?

Hello Parents. My husband and I are having an issue with our daughter at bedtime and I need your insight, advice, stories of victory, and wisdom. Our daughter is 3.5 and she has always been good about sleeping. Normally she will have her bedtime routine, put her to bed in a quiet dark room with no toys, and she is out within 30 minutes. 

**The problem:** within the last month she has developed the giggles at bedtime and will stay awake laughing at nothing until 1-2am. She does not get out of bed or play with toys but entertains herself into the wee hours of the morning leaving her exhausted the next day. We know she is tired at bedtime. She will have a busy day at preschool and will even be sleepy at bedtime, but she will not go to sleep. 

**How we've been handing this so far:** My husband and I will go into her room when we hear her playing and tell her firmly "daughter it's time to close your eyes and go to sleep." We use reasoning with her to explain "did you enjoy being tired and grumpy yesterday morning?" "No." "Well how do we fix that then?" "I need to close my eyes and go to sleep." Cue 10 minutes later the giggling. It is driving us up the wall. It affects her sleep and ours. We cannot sleep knowing she is awake and we also need to be awake to handle disciplining. Thank you so much for reading, any help is appreciated.
<bot>: 3.5 yr old daughter catches the giggles until 1-2am despite being tired from her day. It's like she is fighting sleep but stays in her bed and doesn't play, just entertains herself. HELP!