Absolutely. It would be good for her.
Sharing: anytime circumstances permit. Criteria: same “style of dominance”; safe; practically feasible.
Renting: definitely interesting. Criteria: A week at the time; Security issues would need to be guaranteed; profitable.
Whoring out: Yes, a nice kink. Criteria: by the hour; Owner stays close; limits apply.
Also exchanging slaves for a period of time with other Owners could be considered. All of the above would be tailored so that – in addition to being fun and horny – the slave would be suppressed, humiliated, and developed into a better slavewhore.
Any takers?