You better tell her to show up half an hour earlier than the rest, as she will ____, or waste time, along the way.

verb

1. To act playfully
2. To deal lightly toy

   "accused him of dallying with a serious problem"

3. To waste time
4. Linger, dawdle

phrasal verb

1. To do or think about (something) in a way that is not serious

   "He's been dallying with the idea of running for office."

2. To have a casual romantic or sexual relationship with (someone)

   "a married man who has been dallying with another woman"